looking at the 3, #2 is the balance between them. the contrast in #3 is too harsh for a portrait. looks like its starting to resemble HDR and for a female, that wont do.
now I will say something about the image. the image was shot fine by you. composition is fine and exposure is nice too. but there are other things in it thats bothering my eye. her expression is not relaxed but theres not much you can do here. maybe shes embarrassed or shy or uncomfortable but it makes me feel awkward looking at her feel awkward.
the other thing is the color (WB) is off here. too flat on one hand and bumping saturation will kill the portrait. needs a little tweaking.
contrast also is flat but adding contrast like in the 3rd brings out lines in her (quite) smooth skin. so maybe an adjustment layer and adding contrast to her eyes a bit and lips and hair but leaving her skin undone is better, the background can also use some.
one eye is more closed and its really visible in the 3rd picture. catch lights are too big.
sorry to be anal but the small details is what makes a portrait elite.
this is shot as is, street portrait and there is no control of the lighting so you deal with what you have.
I dont need a lot of time to analyze a picture so when I saw the picture, I said, yea ok. but its missing certain things to make it great.